State by State: How Vaccination Rates Have Changed

Amid the current concern over vaccinations, there are notable differences state-to-state in the percentage of children who have had their MMR (for measles, mumps and rubella) shot.

Nationwide, 91.9 % of 19- to 35-month-olds have had their MMR shot, according to the Centers for Disease Control’s National Immunization Survey. That’s actually up from 2000, when 90.5% had been immunized, but it is down from 2006, when the figure was 92.3%.